Search CTL/CD8+ T-Cell Epitope Database

Found 16 matching records:

Displaying record number 57959

HXB2 Location	Gag(77-85) p17(77-85) DNA(1018..1044)	Gag Epitope Map
Author Location	Gag(77-85)
Epitope	SLYNTVVTL	Epitope Alignment
		Show epitope variants
Epitope Name	SL9
Subtype	B
Species (MHC/HLA)	human(A*0201)
Immunogen	HIV-1 infection
Country	Australia
Experimental methods	CD8 T-cell Elispot - IFNγ
Keywords	escape, HLA associated polymorphism

Notes

• Epitopes that have undergone escape are often still immunogenic. Scanning for epitopes that encompass HLA-specific polymorphisms revealed 97 HLA-polymorphism associations in which the mutation resulted in the creation rather than abolition of an epitope, termed a "neo-epitope". This study examined 9 neo-epitopes that were well-characterized optimal epitopes that elicit T-cell responses in chronic infection. HIV-1 adaptation not only abrogates the immune recognition of early targeted epitopes, but may also increase immune recognition to other epitopes, which elicit immunodominant but non-protective T-cell responses.
• SLYNTVVTL underwent adaptation to SLYNTVaTL. 4 subjects had higher EliSpot responses to the neo-epitope than to the non-adapted form.

References

Keane2012 Niamh M. Keane, Steven G. Roberts, Coral-Ann M. Almeida, Tanya Krishnan, Abha Chopra, Emma Demaine, Rebecca Laird, Monika Tschochner, Jonathan M. Carlson, Simon Mallal, David Heckerman, Ian James, and Mina John. High-Avidity, High-IFN-gamma-Producing CD8 T-Cell Responses following Immune Selection during HIV-1 Infection. Immunol. Cell Biol., 90(2):224-234, Feb 2012. PubMed ID: 21577229. Show all entries for this paper.

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Displaying record number 58867

HXB2 Location	Gag(77-85) p17(77-85) DNA(1018..1044)	Gag Epitope Map
Author Location	Gag(77-85)
Epitope	SLYNTVATL	Epitope Alignment
Subtype	B
Species (MHC/HLA)	human(A*0201)
Immunogen	HIV-1 infection
Country	Australia
Experimental methods	CD8 T-cell Elispot - IFNγ
Keywords	escape, optimal epitope, HLA associated polymorphism

Notes

• Epitopes that have undergone escape are often still immunogenic. Scanning for epitopes that encompass HLA-specific polymorphisms revealed 97 HLA-polymorphism associations in which the mutation resulted in the creation rather than abolition of an epitope, termed a "neo-epitope". This study examined 9 neo-epitopes that were well-characterized optimal epitopes that elicit T-cell responses in chronic infection. HIV-1 adaptation not only abrogates the immune recognition of early targeted epitopes, but may also increase immune recognition to other epitopes, which elicit immunodominant but non-protective T-cell responses.
• Neo-epitope SLYNTVATL underwent adaptation from SLYNTVVTL. 4 subjects had higher EliSpot responses to the neo-epitope than to the non-adapted form.

References

Keane2012 Niamh M. Keane, Steven G. Roberts, Coral-Ann M. Almeida, Tanya Krishnan, Abha Chopra, Emma Demaine, Rebecca Laird, Monika Tschochner, Jonathan M. Carlson, Simon Mallal, David Heckerman, Ian James, and Mina John. High-Avidity, High-IFN-gamma-Producing CD8 T-Cell Responses following Immune Selection during HIV-1 Infection. Immunol. Cell Biol., 90(2):224-234, Feb 2012. PubMed ID: 21577229. Show all entries for this paper.

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Displaying record number 58864

HXB2 Location	Gag(355-363) p24(223-231) DNA(1852..1878)	Gag Epitope Map
Author Location	Gag(355-363)
Epitope	GPGHKARVL	Epitope Alignment
Subtype	B
Species (MHC/HLA)	human(B*0702)
Immunogen	HIV-1 infection
Country	Australia
Experimental methods	CD8 T-cell Elispot - IFNγ, Flow cytometric T-cell cytokine assay
Keywords	escape, optimal epitope, HLA associated polymorphism

Notes

• Epitopes that have undergone escape are often still immunogenic. Scanning for epitopes that encompass HLA-specific polymorphisms revealed 97 HLA-polymorphism associations in which the mutation resulted in the creation rather than abolition of an epitope, termed a "neo-epitope". This study examined 9 neo-epitopes that were well-characterized optimal epitopes that elicit T-cell responses in chronic infection. HIV-1 adaptation not only abrogates the immune recognition of early targeted epitopes, but may also increase immune recognition to other epitopes, which elicit immunodominant but non-protective T-cell responses.
• Neo-epitope GPGHKARVL underwent adaptation from GPSHKARVL. 5 subjects had higher EliSpot responses to the neo-epitope than to the non-adapted form.
• HLA-B*0702-expressing PBMCs from 2 individuals were cultured with GL9 adapted and non-adapted epitopes to generate epitope-specific T-cell lines. The frequencies of central memory and effector memory T cells were not significantly different whether directed against non-adapted or adapted epitopes.
• No difference was found in TCR expression between epitope-specific CTLs from adapted and non-adapted forms of this epitope.

References

Keane2012 Niamh M. Keane, Steven G. Roberts, Coral-Ann M. Almeida, Tanya Krishnan, Abha Chopra, Emma Demaine, Rebecca Laird, Monika Tschochner, Jonathan M. Carlson, Simon Mallal, David Heckerman, Ian James, and Mina John. High-Avidity, High-IFN-gamma-Producing CD8 T-Cell Responses following Immune Selection during HIV-1 Infection. Immunol. Cell Biol., 90(2):224-234, Feb 2012. PubMed ID: 21577229. Show all entries for this paper.

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Displaying record number 57960

HXB2 Location	Gag(355-363) p24(223-231) DNA(1852..1878)	Gag Epitope Map
Author Location	Gag(355-363)
Epitope	GPSHKARVL	Epitope Alignment
		Show epitope variants
Epitope Name	GL9
Subtype	B
Species (MHC/HLA)	human(B*0702)
Immunogen	HIV-1 infection
Country	Australia
Experimental methods	CD8 T-cell Elispot - IFNγ, Flow cytometric T-cell cytokine assay
Keywords	escape, HLA associated polymorphism

Notes

• Epitopes that have undergone escape are often still immunogenic. Scanning for epitopes that encompass HLA-specific polymorphisms revealed 97 HLA-polymorphism associations in which the mutation resulted in the creation rather than abolition of an epitope, termed a "neo-epitope". This study examined 9 neo-epitopes that were well-characterized optimal epitopes that elicit T-cell responses in chronic infection. HIV-1 adaptation not only abrogates the immune recognition of early targeted epitopes, but may also increase immune recognition to other epitopes, which elicit immunodominant but non-protective T-cell responses.
• GPSHKARVL underwent adaptation to GPgHKARVL. 5 subjects had higher EliSpot responses to the neo-epitope than to the non-adapted form.
• HLA-B*0702-expressing PBMCs from 2 individuals were cultured with GL9 adapted and non-adapted epitopes to generate epitope-specific T-cell lines. The frequencies of central memory and effector memory T cells were not significantly different whether directed against non-adapted or adapted epitopes.
• No difference was found in TCR expression between epitope-specific CTLs from adapted and non-adapted forms of this epitope.

References

Keane2012 Niamh M. Keane, Steven G. Roberts, Coral-Ann M. Almeida, Tanya Krishnan, Abha Chopra, Emma Demaine, Rebecca Laird, Monika Tschochner, Jonathan M. Carlson, Simon Mallal, David Heckerman, Ian James, and Mina John. High-Avidity, High-IFN-gamma-Producing CD8 T-Cell Responses following Immune Selection during HIV-1 Infection. Immunol. Cell Biol., 90(2):224-234, Feb 2012. PubMed ID: 21577229. Show all entries for this paper.

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Displaying record number 57957

HXB2 Location	Pol(724-734) Integrase(9-19) DNA(4254..4286)	Pol Epitope Map
Author Location	Pol(724-734)
Epitope	QEEHERYHSNW	Epitope Alignment
		Show epitope variants
Epitope Name	QW11
Subtype	B
Species (MHC/HLA)	human(B*4402)
Immunogen	HIV-1 infection
Country	Australia
Experimental methods	CD8 T-cell Elispot - IFNγ
Keywords	escape, optimal epitope, HLA associated polymorphism

Notes

• Epitopes that have undergone escape are often still immunogenic. Scanning for epitopes that encompass HLA-specific polymorphisms revealed 97 HLA-polymorphism associations in which the mutation resulted in the creation rather than abolition of an epitope, termed a "neo-epitope". This study examined 9 neo-epitopes that were well-characterized optimal epitopes that elicit T-cell responses in chronic infection. HIV-1 adaptation not only abrogates the immune recognition of early targeted epitopes, but may also increase immune recognition to other epitopes, which elicit immunodominant but non-protective T-cell responses.
• QEEHERYHSNW underwent adaptation to neo-epitope QEEHEkYHSNW. 2 subjects had higher EliSpot responses to the neo-epitope than to the non-adapted form.

References

Keane2012 Niamh M. Keane, Steven G. Roberts, Coral-Ann M. Almeida, Tanya Krishnan, Abha Chopra, Emma Demaine, Rebecca Laird, Monika Tschochner, Jonathan M. Carlson, Simon Mallal, David Heckerman, Ian James, and Mina John. High-Avidity, High-IFN-gamma-Producing CD8 T-Cell Responses following Immune Selection during HIV-1 Infection. Immunol. Cell Biol., 90(2):224-234, Feb 2012. PubMed ID: 21577229. Show all entries for this paper.

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Displaying record number 58862

HXB2 Location	Pol(724-734) Integrase(9-19) DNA(4254..4286)	Pol Epitope Map
Author Location	Pol(724-734)
Epitope	QEEHEKYHSNW	Epitope Alignment
Subtype	B
Species (MHC/HLA)	human(B*4402)
Immunogen	HIV-1 infection
Country	Australia
Experimental methods	CD8 T-cell Elispot - IFNγ
Keywords	escape, optimal epitope, HLA associated polymorphism

Notes

• Epitopes that have undergone escape are often still immunogenic. Scanning for epitopes that encompass HLA-specific polymorphisms revealed 97 HLA-polymorphism associations in which the mutation resulted in the creation rather than abolition of an epitope, termed a "neo-epitope". This study examined 9 neo-epitopes that were well-characterized optimal epitopes that elicit T-cell responses in chronic infection. HIV-1 adaptation not only abrogates the immune recognition of early targeted epitopes, but may also increase immune recognition to other epitopes, which elicit immunodominant but non-protective T-cell responses.
• Neo-epitope QEEHEKYHSNW underwent adaptation from QEEHERYHSNW. 2 subjects had higher EliSpot responses to the neo-epitope than to the non-adapted form.

References

Keane2012 Niamh M. Keane, Steven G. Roberts, Coral-Ann M. Almeida, Tanya Krishnan, Abha Chopra, Emma Demaine, Rebecca Laird, Monika Tschochner, Jonathan M. Carlson, Simon Mallal, David Heckerman, Ian James, and Mina John. High-Avidity, High-IFN-gamma-Producing CD8 T-Cell Responses following Immune Selection during HIV-1 Infection. Immunol. Cell Biol., 90(2):224-234, Feb 2012. PubMed ID: 21577229. Show all entries for this paper.

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Displaying record number 57955

HXB2 Location	Pol(838-847) Integrase(123-132) DNA(4596..4625)	Pol Epitope Map
Author Location	Integrase(128-132)
Epitope	STTVKAACWW	Epitope Alignment
		Show epitope variants
Epitope Name	SW10
Subtype	B
Species (MHC/HLA)	human(B*5701)
Immunogen	HIV-1 infection
Country	Australia
Experimental methods	CD8 T-cell Elispot - IFNγ
Keywords	escape, HLA associated polymorphism

Notes

• Epitopes that have undergone escape are often still immunogenic. Scanning for epitopes that encompass HLA-specific polymorphisms revealed 97 HLA-polymorphism associations in which the mutation resulted in the creation rather than abolition of an epitope, termed a "neo-epitope". This study examined 9 neo-epitopes that were well-characterized optimal epitopes that elicited T-cell responses in chronic infection.
• STTVKAACWW underwent classical escape, with adapted forms STaVKAACWW and SnTVKAACWW having abrogated EliSpot responses.

References

Keane2012 Niamh M. Keane, Steven G. Roberts, Coral-Ann M. Almeida, Tanya Krishnan, Abha Chopra, Emma Demaine, Rebecca Laird, Monika Tschochner, Jonathan M. Carlson, Simon Mallal, David Heckerman, Ian James, and Mina John. High-Avidity, High-IFN-gamma-Producing CD8 T-Cell Responses following Immune Selection during HIV-1 Infection. Immunol. Cell Biol., 90(2):224-234, Feb 2012. PubMed ID: 21577229. Show all entries for this paper.

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Displaying record number 57962

HXB2 Location	Vpr(59-67) DNA(5733..5759)	Vpr Epitope Map
Author Location	Vpr(59-67)
Epitope	ALIRILQQL	Epitope Alignment
		Show epitope variants
Epitope Name	AL9
Subtype	B
Species (MHC/HLA)	human(A*0201)
Immunogen	HIV-1 infection
Country	Australia
Experimental methods	CD8 T-cell Elispot - IFNγ
Keywords	escape, HLA associated polymorphism

Notes

• Epitopes that have undergone escape are often still immunogenic. Scanning for epitopes that encompass HLA-specific polymorphisms revealed 97 HLA-polymorphism associations in which the mutation resulted in the creation rather than abolition of an epitope, termed a "neo-epitope". This study examined 9 neo-epitopes that were well-characterized optimal epitopes that elicit T-cell responses in chronic infection. HIV-1 adaptation not only abrogates the immune recognition of early targeted epitopes, but may also increase immune recognition to other epitopes, which elicit immunodominant but non-protective T-cell responses.
• ALIRILQQL underwent adaptation to neo-epitope AiIRILQQL. 1 subject had higher EliSpot responses to the neo-epitope than to the non-adapted form.

References

Keane2012 Niamh M. Keane, Steven G. Roberts, Coral-Ann M. Almeida, Tanya Krishnan, Abha Chopra, Emma Demaine, Rebecca Laird, Monika Tschochner, Jonathan M. Carlson, Simon Mallal, David Heckerman, Ian James, and Mina John. High-Avidity, High-IFN-gamma-Producing CD8 T-Cell Responses following Immune Selection during HIV-1 Infection. Immunol. Cell Biol., 90(2):224-234, Feb 2012. PubMed ID: 21577229. Show all entries for this paper.

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Displaying record number 58866

HXB2 Location	Vpr(59-67) DNA(5733..5759)	Vpr Epitope Map
Author Location	Vpr(59-67)
Epitope	AIIRILQQL	Epitope Alignment
Subtype	B
Species (MHC/HLA)	human(A*0201)
Immunogen	HIV-1 infection
Country	Australia
Experimental methods	CD8 T-cell Elispot - IFNγ
Keywords	escape, optimal epitope, HLA associated polymorphism

Notes

• Epitopes that have undergone escape are often still immunogenic. Scanning for epitopes that encompass HLA-specific polymorphisms revealed 97 HLA-polymorphism associations in which the mutation resulted in the creation rather than abolition of an epitope, termed a "neo-epitope". This study examined 9 neo-epitopes that were well-characterized optimal epitopes that elicit T-cell responses in chronic infection. HIV-1 adaptation not only abrogates the immune recognition of early targeted epitopes, but may also increase immune recognition to other epitopes, which elicit immunodominant but non-protective T-cell responses.
• Neo-epitope AIIRILQQL underwent adaptation from ALIRILQQL. 1 subject had higher EliSpot responses to the neo-epitope than to the non-adapted form.

References

Keane2012 Niamh M. Keane, Steven G. Roberts, Coral-Ann M. Almeida, Tanya Krishnan, Abha Chopra, Emma Demaine, Rebecca Laird, Monika Tschochner, Jonathan M. Carlson, Simon Mallal, David Heckerman, Ian James, and Mina John. High-Avidity, High-IFN-gamma-Producing CD8 T-Cell Responses following Immune Selection during HIV-1 Infection. Immunol. Cell Biol., 90(2):224-234, Feb 2012. PubMed ID: 21577229. Show all entries for this paper.

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Displaying record number 57954

HXB2 Location	Nef(90-97) DNA(9064..9087)	Nef Epitope Map
Author Location	Nef(90-97)
Epitope	FLKEKGGL	Epitope Alignment
		Show epitope variants
Epitope Name	FL8
Subtype	A, B
Species (MHC/HLA)	human(B*0801)
Immunogen	HIV-1 infection
Country	Australia
Experimental methods	CD8 T-cell Elispot - IFNγ
Keywords	escape, HLA associated polymorphism

Notes

• Epitopes that have undergone escape are often still immunogenic. Scanning for epitopes that encompass HLA-specific polymorphisms revealed 97 HLA-polymorphism associations in which the mutation resulted in the creation rather than abolition of an epitope, termed a "neo-epitope". This study examined 9 neo-epitopes that were well-characterized optimal epitopes that elicit T-cell responses in chronic infection. HIV-1 adaptation not only abrogates the immune recognition of early targeted epitopes, but may also increase immune recognition to other epitopes, which elicit immunodominant but non-protective T-cell responses.
• FLKEKGGL underwent classical escape, with adapted forms FLKEqGGL, FLKEeGGL, and FLKEnGGL having abrogated EliSpot responses.
• Longitudinal study of an acute subtype A infection in a B*08-positive patient revealed early responses to FLKEKGGL and its variant, FLKEnGGL. The patient's sequences were the non-adapted form and remained invariant despite high-magnitude responses.

References

Keane2012 Niamh M. Keane, Steven G. Roberts, Coral-Ann M. Almeida, Tanya Krishnan, Abha Chopra, Emma Demaine, Rebecca Laird, Monika Tschochner, Jonathan M. Carlson, Simon Mallal, David Heckerman, Ian James, and Mina John. High-Avidity, High-IFN-gamma-Producing CD8 T-Cell Responses following Immune Selection during HIV-1 Infection. Immunol. Cell Biol., 90(2):224-234, Feb 2012. PubMed ID: 21577229. Show all entries for this paper.

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Displaying record number 58861

HXB2 Location	Nef(105-115) DNA(9109..9141)	Nef Epitope Map
Author Location	Nef(105-115)
Epitope	KRQEILDWVY	Epitope Alignment
Subtype	B
Species (MHC/HLA)	human(Cw*0702)
Immunogen	HIV-1 infection
Country	Australia
Experimental methods	CD8 T-cell Elispot - IFNγ, Chromium-release assay, Flow cytometric T-cell cytokine assay
Keywords	escape, optimal epitope, HLA associated polymorphism

Notes

• Epitopes that have undergone escape are often still immunogenic. Scanning for epitopes that encompass HLA-specific polymorphisms revealed 97 HLA-polymorphism associations in which the mutation resulted in the creation rather than abolition of an epitope, termed a "neo-epitope". This study examined 9 neo-epitopes that were well-characterized optimal epitopes that elicit T-cell responses in chronic infection. HIV-1 adaptation not only abrogates the immune recognition of early targeted epitopes, but may also increase immune recognition to other epitopes, which elicit immunodominant but non-protective T-cell responses.
• Neo-epitope KRQEILDWVY underwent adaptation from KRQDILDWVY. 8 subjects had higher EliSpot responses to the neo-epitope than to the non-adapted form.
• HLA-C*0702-expressing PBMCs from 7 individuals were cultured with KY11 adapted and non-adapted epitopes to generate epitope-specific T-cell lines. The frequencies of central memory and effector memory T cells were not significantly different whether directed against non-adapted or adapted epitopes.
• In chromium release assays, B-cell targets pulsed with non-adapted KY11 were killed more readily by non-adapted KY11 T cells, compared to those pulsed with the adapted form. However, the reverse was observed for T cells, which killed fewer adapted KY11-pulsed targets compared with non-adapted.
• No difference was found in TCR expression between epitope-specific CTLs from adapted and non-adapted forms of this epitope.

References

Keane2012 Niamh M. Keane, Steven G. Roberts, Coral-Ann M. Almeida, Tanya Krishnan, Abha Chopra, Emma Demaine, Rebecca Laird, Monika Tschochner, Jonathan M. Carlson, Simon Mallal, David Heckerman, Ian James, and Mina John. High-Avidity, High-IFN-gamma-Producing CD8 T-Cell Responses following Immune Selection during HIV-1 Infection. Immunol. Cell Biol., 90(2):224-234, Feb 2012. PubMed ID: 21577229. Show all entries for this paper.

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Displaying record number 57956

HXB2 Location	Nef(105-115) DNA(9109..9141)	Nef Epitope Map
Author Location	Nef(105-115)
Epitope	KRQDILDWVY	Epitope Alignment
		Show epitope variants
Epitope Name	KY11
Subtype	B
Species (MHC/HLA)	human(Cw*0702)
Immunogen	HIV-1 infection
Country	Australia
Experimental methods	CD8 T-cell Elispot - IFNγ, Chromium-release assay, Flow cytometric T-cell cytokine assay
Keywords	escape, optimal epitope, HLA associated polymorphism

Notes

• Epitopes that have undergone escape are often still immunogenic. Scanning for epitopes that encompass HLA-specific polymorphisms revealed 97 HLA-polymorphism associations in which the mutation resulted in the creation rather than abolition of an epitope, termed a "neo-epitope". This study examined 9 neo-epitopes that were well-characterized optimal epitopes that elicit T-cell responses in chronic infection. HIV-1 adaptation not only abrogates the immune recognition of early targeted epitopes, but may also increase immune recognition to other epitopes, which elicit immunodominant but non-protective T-cell responses.
• KRQDILDWVY underwent adaptation to neo-epitope KRQeILDWVY. 8 subjects had higher EliSpot responses to the neo-epitope than to the non-adapted form.
• HLA-C*0702-expressing PBMCs from 7 individuals were cultured with KY11 adapted and non-adapted epitopes to generate epitope-specific T-cell lines. The frequencies of central memory and effector memory T cells were not significantly different whether directed against non-adapted or adapted epitopes.
• In chromium release assays, B-cell targets pulsed with non-adapted KY11 were killed more readily by non-adapted KY11 T cells, compared to those pulsed with the adapted form. However, the reverse was observed for T cells, which killed fewer adapted KY11-pulsed targets compared with non-adapted.
• No difference was found in TCR expression between epitope-specific CTLs from adapted and non-adapted forms of this epitope.

References

Keane2012 Niamh M. Keane, Steven G. Roberts, Coral-Ann M. Almeida, Tanya Krishnan, Abha Chopra, Emma Demaine, Rebecca Laird, Monika Tschochner, Jonathan M. Carlson, Simon Mallal, David Heckerman, Ian James, and Mina John. High-Avidity, High-IFN-gamma-Producing CD8 T-Cell Responses following Immune Selection during HIV-1 Infection. Immunol. Cell Biol., 90(2):224-234, Feb 2012. PubMed ID: 21577229. Show all entries for this paper.

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Displaying record number 57958

HXB2 Location	Nef(128-137) DNA(9178..9207)	Nef Epitope Map
Author Location	Nef(128-137)
Epitope	TPGPGIRYPL	Epitope Alignment
		Show epitope variants
Epitope Name	TL10
Subtype	B
Species (MHC/HLA)	human(B*0702)
Immunogen	HIV-1 infection
Country	Australia
Experimental methods	CD8 T-cell Elispot - IFNγ, Flow cytometric T-cell cytokine assay
Keywords	escape, HLA associated polymorphism

Notes

• Epitopes that have undergone escape are often still immunogenic. Scanning for epitopes that encompass HLA-specific polymorphisms revealed 97 HLA-polymorphism associations in which the mutation resulted in the creation rather than abolition of an epitope, termed a "neo-epitope". This study examined 9 neo-epitopes that were well-characterized optimal epitopes that elicit T-cell responses in chronic infection. HIV-1 adaptation not only abrogates the immune recognition of early targeted epitopes, but may also increase immune recognition to other epitopes, which elicit immunodominant but non-protective T-cell responses.
• TPGPGIRYPL underwent adaptation to neo-epitope TPGPGvRYPL. 6 subjects had higher EliSpot responses to the neo-epitope than to the non-adapted form.
• HLA-B*0702-expressing PBMCs from 2 individuals were cultured with TL10 adapted and non-adapted epitopes to generate epitope-specific T-cell lines. The frequencies of central memory and effector memory T cells were not significantly different whether directed against non-adapted or adapted epitopes.
• No difference was found in TCR expression between epitope-specific CTLs from adapted and non-adapted forms of this epitope.

References

Keane2012 Niamh M. Keane, Steven G. Roberts, Coral-Ann M. Almeida, Tanya Krishnan, Abha Chopra, Emma Demaine, Rebecca Laird, Monika Tschochner, Jonathan M. Carlson, Simon Mallal, David Heckerman, Ian James, and Mina John. High-Avidity, High-IFN-gamma-Producing CD8 T-Cell Responses following Immune Selection during HIV-1 Infection. Immunol. Cell Biol., 90(2):224-234, Feb 2012. PubMed ID: 21577229. Show all entries for this paper.

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Displaying record number 58863

HXB2 Location	Nef(128-137) DNA(9178..9207)	Nef Epitope Map
Author Location	Nef(128-137)
Epitope	TPGPGVRYPL	Epitope Alignment
Epitope Name	TL10
Subtype	B
Species (MHC/HLA)	human(B*0702)
Immunogen	HIV-1 infection
Country	Australia
Experimental methods	CD8 T-cell Elispot - IFNγ, Flow cytometric T-cell cytokine assay
Keywords	escape, optimal epitope, HLA associated polymorphism

Notes

• Epitopes that have undergone escape are often still immunogenic. Scanning for epitopes that encompass HLA-specific polymorphisms revealed 97 HLA-polymorphism associations in which the mutation resulted in the creation rather than abolition of an epitope, termed a "neo-epitope". This study examined 9 neo-epitopes that were well-characterized optimal epitopes that elicit T-cell responses in chronic infection. HIV-1 adaptation not only abrogates the immune recognition of early targeted epitopes, but may also increase immune recognition to other epitopes, which elicit immunodominant but non-protective T-cell responses.
• Neo-epitope TPGPGVRYPL underwent adaptation from TPGPGIRYPL. 6 subjects had higher EliSpot responses to the neo-epitope than to the non-adapted form.
• HLA-B*0702-expressing PBMCs from 2 individuals were cultured with TL10 adapted and non-adapted epitopes to generate epitope-specific T-cell lines. The frequencies of central memory and effector memory T cells were not significantly different whether directed against non-adapted or adapted epitopes.
• No difference was found in TCR expression between epitope-specific CTLs from adapted and non-adapted forms of this epitope, TL10.

References

Keane2012 Niamh M. Keane, Steven G. Roberts, Coral-Ann M. Almeida, Tanya Krishnan, Abha Chopra, Emma Demaine, Rebecca Laird, Monika Tschochner, Jonathan M. Carlson, Simon Mallal, David Heckerman, Ian James, and Mina John. High-Avidity, High-IFN-gamma-Producing CD8 T-Cell Responses following Immune Selection during HIV-1 Infection. Immunol. Cell Biol., 90(2):224-234, Feb 2012. PubMed ID: 21577229. Show all entries for this paper.

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Displaying record number 58865

HXB2 Location	Nef(183-191) DNA(9343..9369)	Nef Epitope Map
Author Location	Nef(183-191)
Epitope	WRFDSRLAF	Epitope Alignment
Subtype	A, B
Species (MHC/HLA)	human(B*1503)
Immunogen	HIV-1 infection
Country	Australia
Experimental methods	CD8 T-cell Elispot - IFNγ
Keywords	escape, optimal epitope, HLA associated polymorphism

Notes

• Epitopes that have undergone escape are often still immunogenic. Scanning for epitopes that encompass HLA-specific polymorphisms revealed 97 HLA-polymorphism associations in which the mutation resulted in the creation rather than abolition of an epitope, termed a "neo-epitope". This study examined 9 neo-epitopes that were well-characterized optimal epitopes that elicit T-cell responses in chronic infection. HIV-1 adaptation not only abrogates the immune recognition of early targeted epitopes, but may also increase immune recognition to other epitopes, which elicit immunodominant but non-protective T-cell responses.
• Neo-epitope WRFDSRLAF underwent adaptation from WKFDSRLAF. 1 subject had higher EliSpot responses to the neo-epitope than to the non-adapted form.
• Longitudinal study of an acute subtype A infection in a B*15-positive patient revealed sequence change from the non-adapted WKFDSRLAF to WrFDSRLAF by day 266 of infection. The patient's response to the neo-epitope was increasing at the time ART was initiated.

References

Keane2012 Niamh M. Keane, Steven G. Roberts, Coral-Ann M. Almeida, Tanya Krishnan, Abha Chopra, Emma Demaine, Rebecca Laird, Monika Tschochner, Jonathan M. Carlson, Simon Mallal, David Heckerman, Ian James, and Mina John. High-Avidity, High-IFN-gamma-Producing CD8 T-Cell Responses following Immune Selection during HIV-1 Infection. Immunol. Cell Biol., 90(2):224-234, Feb 2012. PubMed ID: 21577229. Show all entries for this paper.

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Displaying record number 57961

HXB2 Location	Nef(183-191) DNA(9343..9369)	Nef Epitope Map
Author Location	Nef(183-191)
Epitope	WKFDSRLAF	Epitope Alignment
		Show epitope variants
Epitope Name	WF9
Subtype	A, B
Species (MHC/HLA)	human(B*1503)
Immunogen	HIV-1 infection
Country	Australia
Experimental methods	CD8 T-cell Elispot - IFNγ
Keywords	escape, HLA associated polymorphism

Notes

• Epitopes that have undergone escape are often still immunogenic. Scanning for epitopes that encompass HLA-specific polymorphisms revealed 97 HLA-polymorphism associations in which the mutation resulted in the creation rather than abolition of an epitope, termed a "neo-epitope". This study examined 9 neo-epitopes that were well-characterized optimal epitopes that elicit T-cell responses in chronic infection. HIV-1 adaptation not only abrogates the immune recognition of early targeted epitopes, but may also increase immune recognition to other epitopes, which elicit immunodominant but non-protective T-cell responses.
• WKFDSRLAF underwent adaptation to neo-epitope WrFDSRLAF. 1 subject had higher EliSpot responses to the neo-epitope than to the non-adapted form.
• Longitudinal study of an acute subtype A infection in a B*15-positive patient revealed sequence change from the non-adapted WKFDSRLAF to WrFDSRLAF by day 266 of infection. The patient's response to the neo-epitope was increasing at the time ART was initiated.

References

Keane2012 Niamh M. Keane, Steven G. Roberts, Coral-Ann M. Almeida, Tanya Krishnan, Abha Chopra, Emma Demaine, Rebecca Laird, Monika Tschochner, Jonathan M. Carlson, Simon Mallal, David Heckerman, Ian James, and Mina John. High-Avidity, High-IFN-gamma-Producing CD8 T-Cell Responses following Immune Selection during HIV-1 Infection. Immunol. Cell Biol., 90(2):224-234, Feb 2012. PubMed ID: 21577229. Show all entries for this paper.

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