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Dos Reis SA, Gonçalves JD, Lima KDA, Demaria TM, Costa-Bartuli E, Gomes TA, Corrêa MBC, Atella GC, Sola-Penna M, Rosa PS, Pessolani MCV, Nagajyothi J, Lara FA. Mycobacterium leprae is able to infect adipocytes, inducing lipolysis and modulating the immune response. Microbes Infect 2024; 26:105283. [PMID: 38141852 DOI: 10.1016/j.micinf.2023.105283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 12/05/2023] [Accepted: 12/19/2023] [Indexed: 12/25/2023]
Abstract
Leprosy is a chronic infectious disease caused by the intracellular bacillus Mycobacterium leprae (M. leprae), which is known to infect skin macrophages and Schwann cells. Although adipose tissue is a recognized site of Mycobacterium tuberculosis infection, its role in the histopathology of leprosy was, until now, unknown. We analyzed the M. leprae capacity to infect and persist inside adipocytes, characterizing the induction of a lipolytic phenotype in adipocytes, as well as the effect of these infected cells on macrophage recruitment. We evaluated 3T3-L1-derived adipocytes, inguinal adipose tissue of SWR/J mice, and subcutaneous adipose tissue biopsies of leprosy patients. M. leprae was able to infect 3T3-L1-derived adipocytes in vitro, presenting a strong lipolytic profile after infection, followed by significant cholesterol efflux. This lipolytic phenotype was replicated in vivo by M. leprae injection into mice inguinal adipose tissue. Furthermore, M. leprae was detected inside crown-like structures in the subcutaneous adipose tissue of multibacillary patients. These data indicate that subcutaneous adipose tissue could be an important site of infection, and probably persistence, for M. leprae, being involved in the modulation of the innate immune control in leprosy via the release of cholesterol, MCP-1, and adiponectin.
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Affiliation(s)
- Sabrina Alves Dos Reis
- Laboratório de Microbiologia Celular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil; Laboratório de Imunoterapia Celular e Gênica, Instituto Nacional de Câncer (INCA), Rio de Janeiro, Brazil
| | - Jessica Dias Gonçalves
- Laboratório de Microbiologia Celular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Karoline Dos Anjos Lima
- Laboratório de Bioquímica de Lipídeos e Lipoproteínas, Instituto de Bioquímica Médica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Thaina Magalhaes Demaria
- The MetaboliZSm GrouP, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Emylle Costa-Bartuli
- The MetaboliZSm GrouP, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Tiago Araujo Gomes
- Laboratório de Microbiologia Celular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | | | - Georgia Correa Atella
- Laboratório de Bioquímica de Lipídeos e Lipoproteínas, Instituto de Bioquímica Médica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Mauro Sola-Penna
- The MetaboliZSm GrouP, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | - Jyothi Nagajyothi
- Center for Discovery and Innovation, Hackensack Meridian Health, Nutley, NJ-07110, USA
| | - Flavio Alves Lara
- Laboratório de Microbiologia Celular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil.
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De Lima S, Mietto BS, Ribas VT, Ribeiro-Resende VT, Oliveira ALR, Park KK. Editorial: Promoting nervous system regeneration by treatments targeting neuron-glia interactions. Front Cell Neurosci 2024; 17:1355469. [PMID: 38273976 PMCID: PMC10808721 DOI: 10.3389/fncel.2023.1355469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 12/19/2023] [Indexed: 01/27/2024] Open
Affiliation(s)
- Silmara De Lima
- Boston Children's Hospital, Harvard Medical School, Boston, MA, United States
- F.M. Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Boston, MA, United States
- Department of Molecular and Cellular Biology, Faculty of Arts and Sciences, Harvard University, Cambridge, MA, United States
- Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA, United States
| | - Bruno Siqueira Mietto
- Department of Biology, Institute of Biomedical Science, Juiz de Fora Federal University, Juiz de Fora, Minas Gerais, Brazil
| | - Vinicius Toledo Ribas
- Morphology Department, Institute of Biomedical Science, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | | | | | - Kevin K. Park
- Department of Ophthalmology and Neuroscience, University of Texas Southwestern Medical Center, Dallas, TX, United States
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Brügger LMDO, dos Santos MML, Lara FA, Mietto BS. What happens when Schwann cells are exposed to Mycobacterium leprae - A systematic review. IBRO Neurosci Rep 2023; 15:11-16. [PMID: 38204570 PMCID: PMC10776321 DOI: 10.1016/j.ibneur.2023.05.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 05/22/2023] [Indexed: 01/12/2024] Open
Abstract
Mycobacterium leprae, the pathogen that causes human leprosy, has a unique affinity for infecting and persisting inside Schwann cells, the principal glia of the peripheral nervous system. Several studies have focused on this intricate host-pathogen interaction as an attempt to advance the current knowledge of the mechanisms governing nerve destruction and disease progression. However, during the chronic course of leprosy neuropathy, Schwann cells can respond to and internalize both live and dead M. leprae and bacilli-derived antigens, and this may result in divergent cellular pathobiological responses. This may also distinctly contribute to tissue degeneration, failure to repair, inflammatory reactions, and nerve fibrosis, hallmarks of the disease. Therefore, the present study systematically searched for published studies on M. leprae-Schwann cell interaction in vitro to summarize the findings and provide a focused discussion of Schwann cell dynamics following challenge with leprosy bacilli.
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