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A Gamma Interferon Independent Mechanism of CD4 T Cell Mediated
Control of Infection


CD4 T cell deficiency or defective IFNγ signaling render humans and mice

highly susceptible to Mycobacterium tuberculosis (Mtb)

infection. The prevailing model is that Th1 CD4 T cells produce IFNγ to

activate bactericidal effector mechanisms of infected macrophages. Here we test

this model by directly interrogating the effector functions of Th1 CD4 T cells

required to control Mtb in vivo. While Th1 CD4 T cells specific for the Mtb

antigen ESAT-6 restrict in vivo Mtb growth, this inhibition is independent of

IFNγ or TNF and does not require the perforin or FAS effector pathways.

Adoptive transfer of Th17 CD4 T cells specific for ESAT-6 partially inhibited

Mtb growth while Th2 CD4 T cells were largely ineffective. These results imply a

previously unrecognized IFNγ/TNF independent pathway that efficiently

controls Mtb and suggest that optimization of this alternative effector function

may provide new therapeutic avenues to combat Mtb through vaccination.


Vyšlo v časopise: A Gamma Interferon Independent Mechanism of CD4 T Cell Mediated Control of Infection. PLoS Pathog 7(5): e32767. doi:10.1371/journal.ppat.1002052
Kategorie: Research Article
prolekare.web.journal.doi_sk: https://doi.org/10.1371/journal.ppat.1002052

Souhrn

CD4 T cell deficiency or defective IFNγ signaling render humans and mice

highly susceptible to Mycobacterium tuberculosis (Mtb)

infection. The prevailing model is that Th1 CD4 T cells produce IFNγ to

activate bactericidal effector mechanisms of infected macrophages. Here we test

this model by directly interrogating the effector functions of Th1 CD4 T cells

required to control Mtb in vivo. While Th1 CD4 T cells specific for the Mtb

antigen ESAT-6 restrict in vivo Mtb growth, this inhibition is independent of

IFNγ or TNF and does not require the perforin or FAS effector pathways.

Adoptive transfer of Th17 CD4 T cells specific for ESAT-6 partially inhibited

Mtb growth while Th2 CD4 T cells were largely ineffective. These results imply a

previously unrecognized IFNγ/TNF independent pathway that efficiently

controls Mtb and suggest that optimization of this alternative effector function

may provide new therapeutic avenues to combat Mtb through vaccination.


Zdroje

1. CooperAMDaltonDKStewartTAGriffinJPRussellDG

1993

Disseminated tuberculosis in interferon gamma gene-disrupted

mice.

J Exp Med

178

2243

2247

2. FlynnJLChanJTrieboldKJDaltonDKStewartTA

1993

An essential role for interferon gamma in resistance to

Mycobacterium tuberculosis infection.

J Exp Med

178

2249

2254

3. van de VosseEHoeveMAOttenhoffTH

2004

Human genetics of intracellular infectious diseases: molecular

and cellular immunity against mycobacteria and salmonellae.

Lancet Infect Dis

4

739

749

4. Filipe-SantosOBustamanteJChapgierAVogtGde BeaucoudreyL

2006

Inborn errors of IL-12/23- and IFN-gamma-mediated immunity:

molecular, cellular, and clinical features.

Semin Immunol

18

347

361

5. CarusoAMSerbinaNKleinETrieboldKBloomBR

1999

Mice deficient in CD4 T cells have only transiently diminished

levels of IFN-gamma, yet succumb to tuberculosis.

J Immunol

162

5407

5416

6. EhrtSSchnappingerDBekiranovSDrenkowJShiS

2001

Reprogramming of the macrophage transcriptome in response to

interferon-gamma and Mycobacterium tuberculosis: signaling roles of nitric

oxide synthase-2 and phagocyte oxidase.

J Exp Med

194

1123

1140

7. SatoKAkakiTTomiokaH

1998

Differential potentiation of anti-mycobacterial activity and

reactive nitrogen intermediate-producing ability of murine peritoneal

macrophages activated by interferon-gamma (IFN-gamma) and tumour necrosis

factor-alpha (TNF-alpha).

Clin Exp Immunol

112

63

68

8. MajlessiLSimsovaMJarvisZBrodinPRojasMJ

2006

An increase in antimycobacterial Th1-cell responses by

prime-boost protocols of immunization does not enhance protection against

tuberculosis.

Infect Immun

74

2128

2137

9. MittruckerHWSteinhoffUKohlerAKrauseMLazarD

2007

Poor correlation between BCG vaccination-induced T cell responses

and protection against tuberculosis.

Proc Natl Acad Sci U S A

104

12434

12439

10. LambertPHHawkridgeTHanekomWA

2009

New vaccines against tuberculosis.

Clin Chest Med

30

811

826

11. ScangaCAMohanVPYuKJosephHTanakaK

2000

Depletion of CD4(+) T cells causes reactivation of murine

persistent tuberculosis despite continued expression of interferon gamma and

nitric oxide synthase 2.

J Exp Med

192

347

358

12. KaginaBMAbelBScribaTJHughesEJKeyserA

2010

Specific T Cell Frequency and Cytokine Expression Profile do not

Correlate with Protection against Tuberculosis, Following BCG Vaccination of

Newborns.

Am J Respir Crit Care Med

182

1073

9

13. GallegosAMPamerEGGlickmanMS

2008

Delayed protection by ESAT-6-specific effector CD4+T cells

after airborne M. tuberculosis infection.

J Exp Med

205

2359

2368

14. ShilohMUNathanCF

2000

Reactive nitrogen intermediates and the pathogenesis of

Salmonella and mycobacteria.

Curr Opin Microbiol

3

35

42

15. LocksleyRMKilleenNLenardoMJ

2001

The TNF and TNF receptor superfamilies: integrating mammalian

biology.

Cell

104

487

501

16. FlynnJLGoldsteinMMChanJTrieboldKJPfefferK

1995

Tumor necrosis factor-alpha is required in the protective immune

response against Mycobacterium tuberculosis in mice.

Immunity

2

561

572

17. WoodworthJSWuYBeharSM

2008

Mycobacterium tuberculosis-specific CD8+T cells require

perforin to kill target cells and provide protection in

vivo.

J Immunol

181

8595

8603

18. LewinsohnDMBementTTXuJLynchDHGrabsteinKH

1998

Human purified protein derivative-specific CD4+T cells use

both CD95-dependent and CD95-independent cytolytic

mechanisms.

J Immunol

160

2374

2379

19. TurnerJD'SouzaCDPearlJEMariettaPNoelM

2001

CD8- and CD95/95L-dependent mechanisms of resistance in mice with

chronic pulmonary tuberculosis.

Am J Respir Cell Mol Biol

24

203

209

20. LohningMHegazyANPinschewerDDBusseDLangKS

2008

Long-lived virus-reactive memory T cells generated from purified

cytokine-secreting T helper type 1 and type 2 effectors.

J Exp Med

205

53

61

21. BadovinacVPHaringJSHartyJT

2007

Initial T cell receptor transgenic cell precursor frequency

dictates critical aspects of the CD8(+) T cell response to

infection.

Immunity

26

827

841

22. ReinerSL

2007

Development in motion: helper T cells at work.

Cell

129

33

36

23. KhaderSABellGKPearlJEFountainJJRangel-MorenoJ

2007

IL-23 and IL-17 in the establishment of protective pulmonary

CD4+T cell responses after vaccination and during Mycobacterium

tuberculosis challenge.

Nat Immunol

8

369

377

24. HartyJTBevanMJ

1995

Specific immunity to Listeria monocytogenes in the absence of IFN

gamma.

Immunity

3

109

117

25. CowleySCElkinsKL

2003

CD4+T cells mediate IFN-gamma-independent control of

Mycobacterium tuberculosis infection both in vitro and in

vivo.

J Immunol

171

4689

4699

26. StanleySARaghavanSHwangWWCoxJS

2003

Acute infection and macrophage subversion by Mycobacterium

tuberculosis require a specialized secretion system.

Proc Natl Acad Sci U S A

100

13001

13006

27. GuinnKMHickeyMJMathurSKZakelKLGrotzkeJE

2004

Individual RD1-region genes are required for export of

ESAT-6/CFP-10 and for virulence of Mycobacterium

tuberculosis.

Mol Microbiol

51

359

370

Štítky
Hygiena a epidemiológia Infekčné lekárstvo Laboratórium

Článok vyšiel v časopise

PLOS Pathogens


2011 Číslo 5
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